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{{#Wiki_filter:REGULATOINFORMATIONDISTRIBUTIONSTEM(RIDS)ACCESSIONNBR:8708210588DOC.DATE:87/08/14NOTARIZED:NODOCKET0FACIL:50-315DonaldC.CookNuclearPoeerPlantiUnitiiIndiana00500031550-316DonaldC.CookNuclearPacerPlantiUnit2iIndiana505000316AUTH.NAMEAUTHORAFFILIATIONALEXICHORM.P.Indiana8cMichiganElectricCo.RECIP.NAMERECIPIENTAFFILIATIONMURLEYiT.E.DocumentControlBranch(DocumentControlDesk)
{{#Wiki_filter:REGULATOINFORMATION DISTRIBUTION STEM(RIDS)ACCESSION NBR:8708210588 DOC.DATE:87/08/14NOTARIZED:
NODOCKET0FACIL:50-315DonaldC.CookNuclearPoeerPlantiUnitiiIndiana00500031550-316DonaldC.CookNuclearPacerPlantiUnit2iIndiana505000316AUTH.NAMEAUTHORAFFILIATION ALEXICHORM.P.Indiana8cMichiganElectricCo.RECIP.NAMERECIPIENT AFFILIATION MURLEYiT.E.DocumentControlBranch(Document ControlDesk)


==SUBJECT:==
==SUBJECT:==
SubmitsaddiinforeTMIActionItemII.D.1onrelief8csafetyvalvetestingsperJDolan870306request.DISTRIBUTIONCODE:A046DCOPIESRECEIVED:LTRENCLSIZE:TITLE:ORSubmittal:TMIActionPlanRgmtNUREG-07375NUREG-0660NOTES:REClPIENTIDCODE/NAMEPD3-3LAWIGGINGTONiDINTERNAL:AEOD/DQAARM/DAF/LFMBNRR/DEST/*DSNRR/DREP/RPBOGC/HDS1RESDEPYGIEXTERNAL:LPDRNSICCOPIESLTTRENCL101111010110111111RECIPIENTIDCODE/NAMEPD3-3PDAEOD/DSP/TP*BNRR/DEBT/ADENRR/DREP/EPBN/ILRBEGFE01NRCPDRCOPIESLTTRENCL551110111111TOTALNUMBEROFCOPIESREQUIRED:LTTR22ENCL17 0I INDIANA8MICHIGANELECTRICCOMPANYP.O.BOX16631COLUMBUS,OHIO43216August14,1987AEP:NRC:0585JDonaldC.CookNuclear'lantUnitNos.1and2DocketNos.50-315and50-316LicenseNos.DPR-58andDPR-74ADDITIONALINFORMATIONREGARDINGTMIACTIONITEMII.D.1ONRELIEFANDSAFETYVALVETESTINGU.S.NuclearRegulatoryCommissionAttn:DocumentControlDeskWashington,D.C.20555Attn:T.E.Murley
SubmitsaddiinforeTMIActionItemII.D.1onrelief8csafetyvalvetestingsperJDolan870306request.DISTRIBUTION CODE:A046DCOPIESRECEIVED:
LTRENCLSIZE:TITLE:ORSubmittal:
TMIActionPlanRgmtNUREG-0737 5NUREG-0660 NOTES:REClPIENT IDCODE/NAME PD3-3LAWIGGINGTONiDINTERNAL:
AEOD/DQAARM/DAF/LFMB NRR/DEST/*DS NRR/DREP/RPB OGC/HDS1RESDEPYGIEXTERNAL:
LPDRNSICCOPIESLTTRENCL101111010110111111RECIPIENTIDCODE/NAME PD3-3PDAEOD/DSP/TP*B NRR/DEBT/ADE NRR/DREP/EPB N/ILRBEGFE01NRCPDRCOPIESLTTRENCL551110111111TOTALNUMBEROFCOPIESREQUIRED:
LTTR22ENCL17 0I INDIANA8MICHIGANELECTRICCOMPANYP.O.BOX16631COLUMBUS, OHIO43216August14,1987AEP:NRC:0585J DonaldC.CookNuclear'lant UnitNos.1and2DocketNos.50-315and50-316LicenseNos.DPR-58andDPR-74ADDITIONAL INFORMATION REGARDING TMIACTIONITEMII.D.1ONRELIEFANDSAFETYVALVETESTINGU.S.NuclearRegulatory Commission Attn:DocumentControlDeskWashington, D.C.20555Attn:T.E.Murley


==DearDr.Murley:==
==DearDr.Murley:==
Thepurposeofthisletteranditsattachmentistoprovidetheadditionalinformationrequestedbyyourstaff,regardingTMIActionItemII.D.1onreliefandsafetyvalvetesting.TherequestwasmadeinaletterfromD.L.WiggintontoJohnDolan,datedMarch6,1987,andinvolvedadditionalinformationconcerningverificationoftheREPIPEcodeandstressesonpipesupportsinafaultedcondition.InresponsetothequestiononverificationoftheREPIPEcode,averificationreportwasrequestedfromControlDataCorporation(CDC).TheverificationreportisonfileinourofficesandwillbetransmittedtoyoubyGDC.Inresponsetothequestiononpipesupportstresses,wereviewed46pipesupportsinUnits1and2.All46supportswerefoundtomeettheallowablestresslimitsforthefaultedcondition.Amoredetailedresponsetothesequestionsiscontainedintheattachmenttothisletter.ThisinformationissupportedbyANSI/MSSReportSP-58,"PipeHangersandSupports--Materials,DesignandManufacture."ThisdocumenthasbeenpreparedfollowingCorporateprocedureswhichincorporateareasonablesetofcontrolstoinsureitsaccuracyandcompletenesspriortosignaturebytheundersigned.S70aaiosaaS70alePDRADQC~050003i5PPDRVerytrulyyours,IM.P..AlexiVePresientcmAttachmentcc:JohnE.DolanW.G.Smith,Jr.-BridgmanR.C.CallenG.BruchmannG.CharnoffNRCResidentInspector-Bridgman,A.B.Davis-RegionIIIL.Goodwin-CDC AttachmenttoAEP:NRC:0585JResponsetoAdditionalQuestionsConcerningReliefandSafetyValveTesting
Thepurposeofthisletteranditsattachment istoprovidetheadditional information requested byyourstaff,regarding TMIActionItemII.D.1onreliefandsafetyvalvetesting.TherequestwasmadeinaletterfromD.L.Wigginton toJohnDolan,datedMarch6,1987,andinvolvedadditional information concerning verification oftheREPIPEcodeandstressesonpipesupportsinafaultedcondition.
Inresponsetothequestiononverification oftheREPIPEcode,averification reportwasrequested fromControlDataCorporation (CDC).Theverification reportisonfileinourofficesandwillbetransmitted toyoubyGDC.Inresponsetothequestiononpipesupportstresses, wereviewed46pipesupportsinUnits1and2.All46supportswerefoundtomeettheallowable stresslimitsforthefaultedcondition.
Amoredetailedresponsetothesequestions iscontained intheattachment tothisletter.Thisinformation issupported byANSI/MSSReportSP-58,"PipeHangersandSupports--Materials, DesignandManufacture."
Thisdocumenthasbeenpreparedfollowing Corporate procedures whichincorporate areasonable setofcontrolstoinsureitsaccuracyandcompleteness priortosignature bytheundersigned.
S70aaiosaa S70alePDRADQC~050003i5PPDRVerytrulyyours,IM.P..AlexiVePresientcmAttachment cc:JohnE.DolanW.G.Smith,Jr.-BridgmanR.C.CallenG.Bruchmann G.CharnoffNRCResidentInspector
-Bridgman,A.B.Davis-RegionIIIL.Goodwin-CDC Attachment toAEP:NRC:0585J ResponsetoAdditional Questions Concerning ReliefandSafetyValveTesting


Attachment1toAE.RC:0585JInaletterfromD.L.WiggintontoJohnDolan,datedMarch6,1987,theNRCrequestedadditionalinformationregardingreliefandsafetyvalvetesting.TheNRCquestionscontainedintheMarch6letterandourresponsetothosequestionsareasfollows:Question1:"ThelicenseewaspreviouslyrequestedtoprovideverificationthattheREPIPEprogramproducesaccuratefluidforceswhenusedinconjunctionwithRELAPfordischargetransientsofthetypeoccurringinaPWRoverpressureprotectionsystem.ThelicenseerespondedbystatingthatverificationofREPIPE'scapacitytogenerateforcehistoriesisprovidedbytheControlDataCorporation.Thisstatementdoesnotinitselfprovideevidenceofverificationfortheprogram.Therefore,provideaverificationofthisprogrambycomparingcalculatedforceswithmeasuredforcesfromtheEPRItestdataorothersimilarverification."~Resonse;VerificationthattheREPIPEprogramproducesaccuratefluidforceswhenusedinconjunctionwithRELAP5MOD1fortheD.C.CookPlantUnits1and2pressurizeroverpressureprotectionsystemdischargetransientsisprovidedintheREPIPEVersion3.10VerificationReportRev.1,datedJune1987,submittedbyControlDataCorporation.TheproprietaryreportisonfileattheAmericanElectricPowerServiceCorporationofficesinColumbus,Ohio,andisavailableforyourreview.WealsounderstandthatCDCwillsoonmailyouacopyofthisreport.Ms.LindaGoodwin,QualityAssuranceManagerforCDC,hasadvisedusthatthereportwillbemailedsoon.uestion2:"Thelicenseehasprovidedloadcombinationsthatwereusedtoevaluateadequacyofthepipingandpipesupportsfornormal,upset,andemergencyconditions.TheloadcombinationsusedforthesethreeserviceconditionsareinaccordancewithFSARrequirementsandrecommendationsoftheEPRIPWRSafetandReliefVal~eTestProramGuideforAlicationofValveTestProramResultstoPlant-SecificEvaluations,July1982.Thelicensesubmittalsdonot,however,providealoadcombinationforafaultedconditionwherebyloadsforaworstcaseblowdownarecombinedwithloadsforaworstcaseseismicevent.SuchaloadcombinationisspecifiedintheFSAR(Chapter4,Section4.3.1)andintheEPRIGuide.BasedonthestressvaluespresentedintheTeledynereportsincludedinthelicenseesubmittals,aloadcombinationofDeadweight+Design+DesignBasisEarthquake+SafetyValveDischarge<2.4Shcanbeperformedforpipestressesandtheresultingstressesforthisfaultedconditionareacceptable."Theinformationsuppliedbythelicensee,though,doesnotpermitperformingasimilarloadcombinationforafaultedconditiononthepipesupports.Therefore,determineanallowablestressforpipesupportcomponentsforafaultedconditionandperformaloadcombinationsuchasNormal+DesignBasisEarthquake+SafetyValveDischargeinwhichtheresultingstressesarecomparedtotheestablishedallowables."  
Attachment 1toAE.RC:0585JInaletterfromD.L.Wigginton toJohnDolan,datedMarch6,1987,theNRCrequested additional information regarding reliefandsafetyvalvetesting.TheNRCquestions contained intheMarch6letterandourresponsetothosequestions areasfollows:Question1:"Thelicenseewaspreviously requested toprovideverification thattheREPIPEprogramproducesaccuratefluidforceswhenusedinconjunction withRELAPfordischarge transients ofthetypeoccurring inaPWRoverpressure protection system.Thelicenseeresponded bystatingthatverification ofREPIPE'scapacitytogenerateforcehistories isprovidedbytheControlDataCorporation.
~~eAttachment1toAEP.C:0585JPage2~Resense:WehaveperformedaloadcombinationforafaultedconditiononthepressurizerSV/PORVdischargepipesupportsbycombiningloadsforaworse-caseblowdownwithloadsforaworse-caseseismiceventandevaluatedtheresultingcomponentstressesagainstestablishedallowables.TwentyUnit1andtwenty-sixUnit2pipesupports(excludingspringsupports)wereevaluatedusingthefollowingfaultedloadcombinationandallowablestresslimits:FaultedLoadCombination:SVTransientSVTransientWeightLoadThermalLoad+SVTransient2DBE$2ShockLoadLoadJsAllowableStressLimits:Theloadsummationshallnotproducesupportcomponentstressesgreaterthan133%ofthatpermittedby(a)and(b)notedbelow,or0.9Sy,or0.7Su,whicheverisgoverning.(a)"SpecificationfortheDesign,Fabrication,andErectionofStructuralSteelforBuildings(EffectiveNovember1,1978),"ManualofSteelConstruction,EighthEdition.AmericanInstituteforSteelConstruction(AISC).(b)ManufacturersStandardizationSociety(MSS)-SP-58,"PipeHangersandSupports--Materials,DesignandManufacture."Results:Allforty-sixsupportswerefoundtomeettheallowablestresslimitsforthefaultedcondition.>Theminustermisusedforselectingtheworst-caseloadingifthesumofthefirsttwotermsisnegative.}}
Thisstatement doesnotinitselfprovideevidenceofverification fortheprogram.Therefore, provideaverification ofthisprogrambycomparing calculated forceswithmeasuredforcesfromtheEPRItestdataorothersimilarverification."
~Resonse;Verification thattheREPIPEprogramproducesaccuratefluidforceswhenusedinconjunction withRELAP5MOD1fortheD.C.CookPlantUnits1and2pressurizer overpressure protection systemdischarge transients isprovidedintheREPIPEVersion3.10Verification ReportRev.1,datedJune1987,submitted byControlDataCorporation.
Theproprietary reportisonfileattheAmericanElectricPowerServiceCorporation officesinColumbus, Ohio,andisavailable foryourreview.Wealsounderstand thatCDCwillsoonmailyouacopyofthisreport.Ms.LindaGoodwin,QualityAssurance ManagerforCDC,hasadvisedusthatthereportwillbemailedsoon.uestion2:"Thelicenseehasprovidedloadcombinations thatwereusedtoevaluateadequacyofthepipingandpipesupportsfornormal,upset,andemergency conditions.
Theloadcombinations usedforthesethreeserviceconditions areinaccordance withFSARrequirements andrecommendations oftheEPRIPWRSafetandReliefVal~eTestProramGuideforAlicationofValveTestProramResultstoPlant-SecificEvaluations, July1982.Thelicensesubmittals donot,however,providealoadcombination forafaultedcondition wherebyloadsforaworstcaseblowdownarecombinedwithloadsforaworstcaseseismicevent.Suchaloadcombination isspecified intheFSAR(Chapter4,Section4.3.1)andintheEPRIGuide.Basedonthestressvaluespresented intheTeledynereportsincludedinthelicenseesubmittals, aloadcombination ofDeadweight
+Design+DesignBasisEarthquake
+SafetyValveDischarge
<2.4Shcanbeperformed forpipestressesandtheresulting stressesforthisfaultedcondition areacceptable.
"Theinformation suppliedbythelicensee, though,doesnotpermitperforming asimilarloadcombination forafaultedcondition onthepipesupports.
Therefore, determine anallowable stressforpipesupportcomponents forafaultedcondition andperformaloadcombination suchasNormal+DesignBasisEarthquake
+SafetyValveDischarge inwhichtheresulting stressesarecomparedtotheestablished allowables."  
~~eAttachment 1toAEP.C:0585JPage2~Resense:Wehaveperformed aloadcombination forafaultedcondition onthepressurizer SV/PORVdischarge pipesupportsbycombining loadsforaworse-case blowdownwithloadsforaworse-case seismiceventandevaluated theresulting component stressesagainstestablished allowables.
TwentyUnit1andtwenty-six Unit2pipesupports(excluding springsupports) wereevaluated usingthefollowing faultedloadcombination andallowable stresslimits:FaultedLoadCombination:
SVTransient SVTransient WeightLoadThermalLoad+SVTransient 2DBE$2ShockLoadLoadJsAllowable StressLimits:Theloadsummation shallnotproducesupportcomponent stressesgreaterthan133%ofthatpermitted by(a)and(b)notedbelow,or0.9Sy,or0.7Su,whichever isgoverning.
(a)"Specification fortheDesign,Fabrication, andErectionofStructural SteelforBuildings (Effective November1,1978),"ManualofSteelConstruction, EighthEdition.AmericanInstitute forSteelConstruction (AISC).(b)Manufacturers Standardization Society(MSS)-SP-58, "PipeHangersandSupports--Materials, DesignandManufacture."
Results:Allforty-six supportswerefoundtomeettheallowable stresslimitsforthefaultedcondition.
>Theminustermisusedforselecting theworst-case loadingifthesumofthefirsttwotermsisnegative.}}

Revision as of 08:26, 29 June 2018

Submits Addl Info Re TMI Action Item II.D.1 on Relief & Safety Valve Testing,Per Dl Wigginton 870306 Request.All 46 Pipe Supports in Units Reviewed & Found to Meet Stress Limits for Faulted Conditions & Repipe Code Verified
ML17325A262
Person / Time
Site: Cook  
Issue date: 08/14/1987
From: ALEXICH M P
INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To: MURLEY T E
NRC, NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
TASK-2.D.1, TASK-TM AEP:NRC:0585J, AEP:NRC:585J, NUDOCS 8708210588
Download: ML17325A262 (7)
v • d • e


Text

REGULATOINFORMATION DISTRIBUTION STEM(RIDS)ACCESSION NBR:8708210588 DOC.DATE:87/08/14NOTARIZED:

NODOCKET0FACIL:50-315DonaldC.CookNuclearPoeerPlantiUnitiiIndiana00500031550-316DonaldC.CookNuclearPacerPlantiUnit2iIndiana505000316AUTH.NAMEAUTHORAFFILIATION ALEXICHORM.P.Indiana8cMichiganElectricCo.RECIP.NAMERECIPIENT AFFILIATION MURLEYiT.E.DocumentControlBranch(Document ControlDesk)

SUBJECT:

SubmitsaddiinforeTMIActionItemII.D.1onrelief8csafetyvalvetestingsperJDolan870306request.DISTRIBUTION CODE:A046DCOPIESRECEIVED:

LTRENCLSIZE:TITLE:ORSubmittal:

TMIActionPlanRgmtNUREG-0737 5NUREG-0660 NOTES:REClPIENT IDCODE/NAME PD3-3LAWIGGINGTONiDINTERNAL:

AEOD/DQAARM/DAF/LFMB NRR/DEST/*DS NRR/DREP/RPB OGC/HDS1RESDEPYGIEXTERNAL:

LPDRNSICCOPIESLTTRENCL101111010110111111RECIPIENTIDCODE/NAME PD3-3PDAEOD/DSP/TP*B NRR/DEBT/ADE NRR/DREP/EPB N/ILRBEGFE01NRCPDRCOPIESLTTRENCL551110111111TOTALNUMBEROFCOPIESREQUIRED:

LTTR22ENCL17 0I INDIANA8MICHIGANELECTRICCOMPANYP.O.BOX16631COLUMBUS, OHIO43216August14,1987AEP:NRC:0585J DonaldC.CookNuclear'lant UnitNos.1and2DocketNos.50-315and50-316LicenseNos.DPR-58andDPR-74ADDITIONAL INFORMATION REGARDING TMIACTIONITEMII.D.1ONRELIEFANDSAFETYVALVETESTINGU.S.NuclearRegulatory Commission Attn:DocumentControlDeskWashington, D.C.20555Attn:T.E.Murley

DearDr.Murley:

Thepurposeofthisletteranditsattachment istoprovidetheadditional information requested byyourstaff,regarding TMIActionItemII.D.1onreliefandsafetyvalvetesting.TherequestwasmadeinaletterfromD.L.Wigginton toJohnDolan,datedMarch6,1987,andinvolvedadditional information concerning verification oftheREPIPEcodeandstressesonpipesupportsinafaultedcondition.

Inresponsetothequestiononverification oftheREPIPEcode,averification reportwasrequested fromControlDataCorporation (CDC).Theverification reportisonfileinourofficesandwillbetransmitted toyoubyGDC.Inresponsetothequestiononpipesupportstresses, wereviewed46pipesupportsinUnits1and2.All46supportswerefoundtomeettheallowable stresslimitsforthefaultedcondition.

Amoredetailedresponsetothesequestions iscontained intheattachment tothisletter.Thisinformation issupported byANSI/MSSReportSP-58,"PipeHangersandSupports--Materials, DesignandManufacture."

Thisdocumenthasbeenpreparedfollowing Corporate procedures whichincorporate areasonable setofcontrolstoinsureitsaccuracyandcompleteness priortosignature bytheundersigned.

S70aaiosaa S70alePDRADQC~050003i5PPDRVerytrulyyours,IM.P..AlexiVePresientcmAttachment cc:JohnE.DolanW.G.Smith,Jr.-BridgmanR.C.CallenG.Bruchmann G.CharnoffNRCResidentInspector

-Bridgman,A.B.Davis-RegionIIIL.Goodwin-CDC Attachment toAEP:NRC:0585J ResponsetoAdditional Questions Concerning ReliefandSafetyValveTesting

Attachment 1toAE.RC:0585JInaletterfromD.L.Wigginton toJohnDolan,datedMarch6,1987,theNRCrequested additional information regarding reliefandsafetyvalvetesting.TheNRCquestions contained intheMarch6letterandourresponsetothosequestions areasfollows:Question1:"Thelicenseewaspreviously requested toprovideverification thattheREPIPEprogramproducesaccuratefluidforceswhenusedinconjunction withRELAPfordischarge transients ofthetypeoccurring inaPWRoverpressure protection system.Thelicenseeresponded bystatingthatverification ofREPIPE'scapacitytogenerateforcehistories isprovidedbytheControlDataCorporation.

Thisstatement doesnotinitselfprovideevidenceofverification fortheprogram.Therefore, provideaverification ofthisprogrambycomparing calculated forceswithmeasuredforcesfromtheEPRItestdataorothersimilarverification."

~Resonse;Verification thattheREPIPEprogramproducesaccuratefluidforceswhenusedinconjunction withRELAP5MOD1fortheD.C.CookPlantUnits1and2pressurizer overpressure protection systemdischarge transients isprovidedintheREPIPEVersion3.10Verification ReportRev.1,datedJune1987,submitted byControlDataCorporation.

Theproprietary reportisonfileattheAmericanElectricPowerServiceCorporation officesinColumbus, Ohio,andisavailable foryourreview.Wealsounderstand thatCDCwillsoonmailyouacopyofthisreport.Ms.LindaGoodwin,QualityAssurance ManagerforCDC,hasadvisedusthatthereportwillbemailedsoon.uestion2:"Thelicenseehasprovidedloadcombinations thatwereusedtoevaluateadequacyofthepipingandpipesupportsfornormal,upset,andemergency conditions.

Theloadcombinations usedforthesethreeserviceconditions areinaccordance withFSARrequirements andrecommendations oftheEPRIPWRSafetandReliefVal~eTestProramGuideforAlicationofValveTestProramResultstoPlant-SecificEvaluations, July1982.Thelicensesubmittals donot,however,providealoadcombination forafaultedcondition wherebyloadsforaworstcaseblowdownarecombinedwithloadsforaworstcaseseismicevent.Suchaloadcombination isspecified intheFSAR(Chapter4,Section4.3.1)andintheEPRIGuide.Basedonthestressvaluespresented intheTeledynereportsincludedinthelicenseesubmittals, aloadcombination ofDeadweight

+Design+DesignBasisEarthquake

+SafetyValveDischarge

<2.4Shcanbeperformed forpipestressesandtheresulting stressesforthisfaultedcondition areacceptable.

"Theinformation suppliedbythelicensee, though,doesnotpermitperforming asimilarloadcombination forafaultedcondition onthepipesupports.

Therefore, determine anallowable stressforpipesupportcomponents forafaultedcondition andperformaloadcombination suchasNormal+DesignBasisEarthquake

+SafetyValveDischarge inwhichtheresulting stressesarecomparedtotheestablished allowables."

~~eAttachment 1toAEP.C:0585JPage2~Resense:Wehaveperformed aloadcombination forafaultedcondition onthepressurizer SV/PORVdischarge pipesupportsbycombining loadsforaworse-case blowdownwithloadsforaworse-case seismiceventandevaluated theresulting component stressesagainstestablished allowables.

TwentyUnit1andtwenty-six Unit2pipesupports(excluding springsupports) wereevaluated usingthefollowing faultedloadcombination andallowable stresslimits:FaultedLoadCombination:

SVTransient SVTransient WeightLoadThermalLoad+SVTransient 2DBE$2ShockLoadLoadJsAllowable StressLimits:Theloadsummation shallnotproducesupportcomponent stressesgreaterthan133%ofthatpermitted by(a)and(b)notedbelow,or0.9Sy,or0.7Su,whichever isgoverning.

(a)"Specification fortheDesign,Fabrication, andErectionofStructural SteelforBuildings (Effective November1,1978),"ManualofSteelConstruction, EighthEdition.AmericanInstitute forSteelConstruction (AISC).(b)Manufacturers Standardization Society(MSS)-SP-58, "PipeHangersandSupports--Materials, DesignandManufacture."

Results:Allforty-six supportswerefoundtomeettheallowable stresslimitsforthefaultedcondition.

>Theminustermisusedforselecting theworst-case loadingifthesumofthefirsttwotermsisnegative.

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